These are the most comfortable lounge/ running around pants I have ever owned. The soft fleece is on both sides (as in inside where it counts, not just outside). They feel absolutely decadent on. As a surprise bonus, they are pretty darn wind resistant. Here in Seattle temperatures recently dropped to the teens and 20's. Coaxing my dog outside to do his duty was a challenge - and not something I looked forward to either with all that cold wind and frigid temperatures. As I stood out in the cold telling my dog to hurry up, I noticed that my legs were nice and toasty - event if my hands were turning into ice cubes. Only one complaint, I'm 5'5" and these pants are a bit long. I think they'll hem easy whenever I take the time to get around to it.